Last Updated: Wednesday, July 10, 2013, 14:10
A 154-page document was prepared by the Mars 2020 Science Definition Team, which NASA appointed in January to outline scientific objectives for the mission.
Last Updated: Sunday, February 10, 2013, 21:51
One way to find whether exoplanets would contain life forms would be by looking at their distinctive colours, say scientists.
Last Updated: Saturday, February 2, 2013, 14:09
Scientists have claimed to have found the first tantalising signs of life to be detected in waters from a subglacial lake, half a mile beneath the snowy wastes of the Antarctic.
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